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A 84.0 kg girl lowers herself to the ground from a height of 8.6 m by holding onto a rope running over a pulley to a 30.0 kg sandbag. What is the magnitude of the acceleration of the girl?
Find the normalization constant co and the probability of finding the particle in the interval ±a//5. What is the mean momentum?
an object is placed 10.5 cm in front of a lens of focal length 5.0 cm. another lens of focal length 4.0 cm is placed
A person notices a mild shock if the current along a path through the thumb and index finger exceeds 80 μA. Find the maximum allowable potential difference without shock across the thumb and index finger for a dry-skin resistance of 4 x 10^5 Ω.
A 2.25kg mass is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.6N is required to hold the mass at rest when it is pulled 0.215m from its equilibrium position, Calculate the total energy of the oscillating..
A fan rotating at 20 rpm slows down by a constant acceleration and comes to a stop in a time of 4.7 s. What is its angular displacement in this time? Give your answer in radians, do not enter units.
A light beam with wavelength 440. nm in a material then enters air and its wavelength becomes 577. nm. What is the index of refraction for the material
Your friend observes an artificial satellite orbiting the earth. He estimates it is at an altitude h = 938 km above the earth's surface and has a mass m = 3500 kg. What is the period (s) of the satellite's motion
An electric field of magnitude 190 V/m is directed perpendicular to a circular planar surface with radius 6.39 cm, determine the magnitude of the magnetic field at a radial distance 11.1 cm away from the center of the circular area
The positron is a particle with the same masses as an electron however charges +e. a positron in a bubble chamber moves perpendicular to a 4.0 T magnetic field. If the positrons kinetic energy is 25eV what is the radius of its trajectory in a bubble ..
A diver in a swimming pool shines a flashlight up from below the water%u2019s surface at an angle of 30.0 degrees from the normal. at what angle to the normal does the light leave the water
Parallel light rays with a wavelength of 580 nm fall on a single slit. On a screen 3.00 m away, the distance between the first dark fringes on either side of the central maximum is 4.30 mm . What is the width of the slit?
The distance between two successive minima of a transverse wave is 2.35 m. Find the frequency of the wave
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